Jabal Ajlun is the mountainous region in northwestern Jordan between the Yarmouk River to the north and the Zarqa River to the south. It is administratively divided between the governorates of Irbid,

Irbid, known in ancient times as Arabella or Arbela, is the capital and largest city of Irbid Governorate. It has the second-largest metropolitan population in Jordan after Amman, with a population of